[NET] include/net/: Spelling fixes

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/irda/discovery.h b/include/net/irda/discovery.h
index eb0f9de..e4efad1 100644
--- a/include/net/irda/discovery.h
+++ b/include/net/irda/discovery.h
@@ -80,7 +80,7 @@
 	irda_queue_t	q;		/* Must be first! */
 
 	discinfo_t	data;		/* Basic discovery information */
-	int		name_len;	/* Lenght of nickname */
+	int		name_len;	/* Length of nickname */
 
 	LAP_REASON	condition;	/* More info about the discovery */
 	int		gen_addr_bit;	/* Need to generate a new device